package Linepinjie;

public class line {
    public static void main(String[] args) {
        int[] arr={1,2,3};
        String s=arrayToString(arr);
        System.out.println(s);
    }
public static String arrayToString(int[] arr){
        String s="";
        s +="[";
        for(int i=0;i<arr.length;i++)
            if(i==arr.length-1){
                s+=arr[i];
            }else{
                s+=arr[i];
                s+=", ";
            }
        s +="]";
        return s;
}

    }

